SU1275376A2 - Device for controlling water supply to section of hydraulic colliery - Google Patents

Abstract

The invention relates to the automated management of production processes, can be used in managing the supply of low-pressure water to areas of hydraulic mines for flushing the rock mass through pressure-free troughs and is an improvement of the invention according to the author. St. 1115020. The aim of the invention is to enhance the functionality of the device by controlling the pump of the sump. The device additionally contains sensors for the level of liquids and the critical level of solid mass and the pump control unit, and the AND block, three OR elements and four HE elements are entered into the logic block. At. formation of a sufficient amount of water in the pulp collector triggers a liquid level sensor and the device blocks the operation of the valve and its control units and turns on (L co. The pump is blocked when a solid mass of a critical level is deposited in the pulp collector. 2 Il. K) ate oo a

Description

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The invention relates to a ts ;; -;: to gizirovannom management of ppisovymvol'stvennymi processes ,. :; cT1polzuka) when managing and supplying low-pressure water to sections of the hydroshield for flushing the rock mass n: about pressure-free gutters and is an improvement of the device according to the author. ev about № 1115020,

The purpose of the invention is to expand the functional capabilities of the device by controlling the pump - (ul-sump.

Fig. 1 shows the function. The device is a circuit; n FIG. 2, a functional diagram of a logical block.

The device contains a block 1 setters5. pressure sensor 2 j first 3 and in the flow 4 sensors for the required number of odes, comparison unit 6, threshold elements 7–9, washing setpoint 10, ban elements 11–13; logic unit 14, valve control unit 15, valve actuator 16, memory block 17, task time unit 18 display unit 19, control panel 20, controller unit 21, conveyor control unit 22, switching element 23, conveyor actuator 24 setting unit 25 for closing the gate valve, block 26 for determining the sign of conveyor 27 and chute 28. Block 14 contains elements EE 29, AND 30 and OR 31 and element 32 delay. In addition, the device contains (FIG. 1 to 2) pulp collector 33, a pump 34 with a control unit 35, a fluid level sensor 3 and a critical mass level sensor 37, and four HE elements 29, four AND elements are additionally introduced into block 14 30 and three elements OR 31 „

The control object works as follows.

From the mine bottom coal is transported by conveyor 27 to the yellow (5 28), where further samootne hydrotransport of coal is made (arrows show the direction of transport). the system. The co-operation of the fan is ensured by unit 22 and

24 ,, The essence of the control of the facility is iggs} j with the time of providing 1-, 1 what is required by the water required for the mountain along the trench.

The main mode of operation of the device for 1: 1 is as follows,

(/ kg “corresponding to the flow rate for water supplied from, for the rock mass, from the water flow sensor 3 installed on the conveyor 27 and to the control unit 5, which generates a signal, prop (5p1 coal consumption and corresponding to the required amount of flushing water. Last signal through the element 12 to the second input of the comparison unit 6, which produces a mismatch signal between the supplied and required water flow. This signal, through the BAN 11, goes to the valve control unit 15, which, together with By completing the valve 16, the valve fulfills the given, first mismatch, Thus, the minimum necessary flow rate is set in dy.

In c, the inflow of mine water into the pulp collector 33 or the arrival of 1 mixture from hydraulic faces with low solid content in the path of the collector 33 accumulates excess (for further hydrotransport) water "And when its amount exceeds the installation level H ,, then the washout mountain the masses along chute 28 are much more eco-friendly, to use this water, and

not g; -: droenergiyu from the surface of the mine. In this case, the back door is blocked for closure, and for flushing, the recirculation pump 34 is activated by the commands of the control unit 35, to which the settings from the logic block 14 are supplied.

The information signal Z, corresponding to the operation of the conveyor 27, arrives at b, as far as logic 14 from the console 205, and from such an element of it that fits into a single polosacheny when you press the start button of the conveyor, remains unchanged after that, until the engine is completely off the conveyor and during the operation, and zeroed when the conveyor motor is disconnected. Thus, the signal Zj 3 1 is determined - when the start button of the conveyor is pressed to block 21, i.e. switched on if necessary (scientific research institute of conveyor 27; 1 - when the engine of conveyor 27 is working; O - when disconnecting the conveyor motor 27. Analog signal from sensor 4 The angle of the coal enters the threshold elements 8 and 9, which form the signals Z and Z, which enter the logic block, than 1 at Q at Q Qij min 1 at Q ,, O, 0 at Qy O is the signal from sensor 4 races where Qy of the coal stroke; -value, proportional to the minimum amount of coal, below which it is not advisable to reduce the amount of flushing water due to possible blockage of the gutter by large pieces of coal Q (., determined depending on the granulometric composition of the mountain mass and the width of the bottom of the gutter. The signal P from the pressure sensor 2 installed in the pipeline is fed to the threshold element 7 forming the signal 7. 0 Р Р Р 1 1 Р Р where Р is the value proportional to the minimum allowable working pressure in the pipeline when the valve is closed. At Р: Рр it is not expedient to open the valve dp of washing out the rock mass, since a quality smu will not be provided. The value of P is determined by the productivity of the conveyor 27, the granulometric composition of the rock mass and the diameter of the conduit. 76 Signals ZQ and Z, signaling signals for opening or closing the valve come from the valve actuator 16 (for example, from the valve limit switches) to the block 14. The control panel 20 is also intended to set the automatic () or manual () mode of the device and generate one of the signals: flushing (A -1 or closing) the valve in manual mode with remote control. The time setpoint block 18 is designed to form an interval (determine the abstract interval of the required washing time as t, the value of which is proportional to the average density of the slurry and the length of the trough) of the duration of the wash. Flushing is carried out in an automatic mode of operation of the device after the shutdown of the conveyor, or while reducing the amount of solid transported on the conveyor to zero. The function of turning on the time of the specifying unit 18 is as follows: P, (Z, V Z, l Z,) A, where P is the memory function of the perfect memory, which is determined by the activation state of the memory unit 17. After the washing time, the block 18 generates a pulse K. Block 18 is turned off after the interval C has expired (the origin is P) or when the device is switched to manual operation mode PT ° 3A, where c is the signal from the output of the delay element inputted to the signal G. Moreover, the signal 17 needs to be triggered first by block 17, and then by block 18. This is provided by delay element 32 located in block 14 in circuit t —delay element -C 3 (the amount of delay is determined by the response time of block 17). The memory function of the complete flashing is stored in the block 17. The assignment of that function in the lockout lock-on lock-on unit 18 if the flushing has already been carried out and the function has been formed.

Z, V

Z

Functions for switching on and off the memory of a perfect flush (i.e., block 17), respectively

Z, L

The function p .. takes into account the signal Z

(since the conveyor can be stopped loaded (QU O and, accordingly, Z-, 1). and there is no need to include a channel. If the valve is closed, it is advisable to open it to flush the rock mass only if the pressure in the pipeline is sufficient (t i.e. at 2, 0), otherwise in block 14 a blocking function Z is formed, signaling the lack of hydropower in the 2ias system. The required opening of the valve is made (automatically in the case of Qj.5 Qy d), since the condition ZZ may occur l z, 1, while it is necessary to rinse with a specified amount of water, if the conveyor is in working condition and if the blocking function Zg has not taken place.At the same time, in block 14 a signal Z is generated, which is fed to the element BAN 12, whose input is connected to the output of the setting device 5, allowing the passage of the setting signal, proportional to the solid flow, in block 6 comparison. and then the error signal is fed through element 11 to block 15, which, together with the authority 16, works on this error. Thus, when forming Zy 1, the device sets the water flow for flushing the rock mass through the chute, corresponding to the required (i.e. proportional to the amount of solid conveyed by the conveyor). The valve is closed in the automatic mode of the device operation if the gutter is flushed.

and the conveyor is disconnected either when reducing the amount of transported solid on the conveyor to zero and if the installation was carried out, or in manual mode with the corresponding toggle switch (signal А 1) on the hand control

Z,)

 (Z, V

 us

Z, L

V A ,, L

BUT,

L

BUT

Claims (1)

The signal Zo arrives at the element BAN 12, the input of which is connected to the output of the setting device 25, allowing the closing signal of the setting signal to be passed in block 6 of the comparison. The flush is flushed in manual mode (by pressing the corresponding toggle switch on the remote control 20, i.e. А 1) and automatically in the absence of the blocking signal Zg and if the flush relay is activated. or if Q “with Qq and the conveyor 9 CP-G A Z L A V A L A, P q The need signal Zq is fed to the first input of the corresponding element 3MIPET 12 whose second input is connected to the output of the setpoint 10, allowing the signal to flow from setpoint 10 (this is a manual signal setter, so you can adjust the flushing water flow in both manual and automatic redeam, if necessary) to block 6 of comparison and then the error signal comes from block 6 through element 11 to block 15, BAN Element 11 is open (i.e. permits the processing of a given drove mismatch) when at its input from block 14 the signal enters Z, Z, Z ZQ L A where Z ,, Z, j signal positivity error signal generated by block 6 and signifying the need for further opening the gate. Element 11, whose input receives a signal Z (o), thus prevents overshooting (for example, from the case when the valve is open to the end, and the block generates a positive signal for matching races, corresponding to the opening, which is possible, for example, with leaks in When starting the system (object and control system), i.e. when it is closed behind the engine, and the conveyor needs to be started (the operator pressed the Start button of the conveyor on the control panel 20 of the conveyor), it is necessary to block the start impulse received from the control panel 20 to block 22 ip until the flush water flow reaches the desired value (i.e., the mismatch determined by the comparison unit is discharged) because otherwise a hard filling may occur at the beginning of the chute (if the conveyor was loaded before the start). blocking at start-up takes the BANE element 13, which is opened (by a zero signal from block 6, i.e. after working off the error) to pass the starting pulse from the console 20 to the block 22. However, the element 13 does not disrupt the further operation of the console 20 and b eye 22, it is shunted element 23 with a normally open relay contact incorporation conveyor which is closed during operation of the conveyor. The input of the display unit 19, intended for displaying analog and discrete signals (unified), is uninterruptedly Signals are received, the display of which is possible on the basis of the use of widely known means of indication. In the event that a sufficient amount of excess water has been collected in the sump, the device blocks the operation of the valve and its control units and starts the recirculation pump. The sensor 36 levels of fluid produces two signals 1 when S ti 0 when N - N „„ c 1 when N About when H N. 76. where H, H are the levels of water filling of the tank collector 33, respectively, the current, minimum and maximum. The formation of the Z signal indicates that a sufficient amount of excess water collected in the pulverized collector 33, at which it is advisable to reduce the rock mass using the pump 34. A signal spacing indicates that the water level: in the pulp collector reached the upper value and turn on the Hdcoc 34 is necessary in order to avoid overflow of the container of the sump 33 with water coming from the gate valve and a. The sensor 37 generates the value of the signal Z, 4 of the critical level of solid mass. This is the level above which the hydrotransport unit is not able to dispense the solid mass and water at the concentration required for hydrotransportation. The level of precipitated solid mass in the slurry-water tank 33 is critical, when the difference between the water level and the solid level is not more than 10-30 cm (depending on the volume of the pulp collector capacity). When forming the Z signal, it is not possible to use the pump 34, since there is a danger that the tank collector 33 will be hard-filled. Block 35 turns on pump 34, if command 7 arrives at its input, (turns off, if command Z (g) and form MiipyeT signal, signaling that pump 34 is turned on, with Z, 5 (Z, L Z, VZ ,,) L Z ,; Z, g (Z, 4 VZ ,, VZ ,.) A P. When forming the Z command, the opening of the valve was performed by generating signals Z, ZZ, -gj taking into account the value of Z, .e. At Z (, d (, 1 is formed by 7 7 - 1 and Zg О, that with Z, g Ajj it is determined to close the valve and to turn on by command Z, pump 34. The sequence of execution of these logical functions is as follows. If the command 2.5 1 is generated, then pump 34, while 1, which leads to the formation of ZU. The value of Zg 0 generates the values of U qq S the value of the signal Z gj, after the washout of the chute 28 sets Zg 1 and the shutter is closed, 5, i.e., the pump 345 first turns on the flushing time is closed by the valve, this ensures a trouble-free water supply when the system is switched to the recirculated air mode, which is typical of the reverse transfer. When, 1, the command Zg O is formed and, if necessary, the for- mode was washed. The command is commanded (- - 1, Z 1, which determines the required opening of the valve. In this case, the pump is turned off and the functions of Z-. are turned off. Z is logical as described. Invention The device for controlling the water supply of the hydraulic section of engine number 1115020, that, in order to expand the functionality of the device by controlling the pump of the pulp collector, it additionally provides but gauge fluid levels and. the sensor of the critical level of solid mass, installed in the pulverized collector, and the pump control unit; and the logical block includes four elements NOT, four AND elements and three OR elements, block output. pump control is connected to the third eleventh element NOT with the first input of the fifteenth element AND, the output of the pump control unit is connected to the second input of the fifteenth element AND, whose code is connected to the second input of the ninth element OR, and the output of the seventh element AND is connected to. the first input of the ninth element OR, the mu input of the fifth element OR, the third output of the control panel and the first output of the liquid level sensor are connected respectively to the first and second inputs of the twelfth element AND, the output of which is connected to the first input of the seventh element OR, the second output of the liquid level sensor connected to the second input of the seventh element OR, the output of which is connected to the first input of the thirteenth element AND, the output of the sensor of a critical level of solid mass through the eighth element is NOT connected to the second input thirteen About element I, the output of which is connected to the first input of the pump control unit, the output of the sensor of the critical level of solid mass is also connected to the first input of the eighth element OR, the first and second outputs of the liquid level sensor through the ninth and tenth elements are NOT connected to the second and third the inputs of the terminal element OR, the output of which is connected to the first input of the fourteenth element AND, the output of the memory unit is connected to the second input of the fourteenth element AND, the output of which is connected to the second input of the control unit Sos and through